Senior .NET Developer

We’re hiring an experienced Senior .NET Developer to help build and operate our platform. You’ll work on modular, high-quality services powered by .NET 8, CQRS, and robust integrations for auth, content, messaging, logging, and data.

Role Summary

Design, implement, and maintain .NET 8 services with a clean Controller → Validator → Handler → DB flow. Integrate Keycloak for authentication/authorization, Strapi for content, RabbitMQ/MassTransit for messaging, Graylog for centralized logging, and MySQL for persistence. Ensure reliability and testability with xUnit/Moq/AutoFixture/FluentAssertions. Manage background jobs with Hangfire and use Dapper where read-heavy performance matters. Run everything in Docker with environment-based configuration and proper reverse proxy/CORS/TLS handling.

Key Responsibilities

• Build API, Command, and Query services in .NET 8 following a modular architecture.
• Implement CQRS with MediatR and FluentValidation; deliver create/update/read flows end-to-end.
• Develop typed HTTP clients using Refit to consume Strapi (REST/GraphQL), including webhook/lifecycle hook scenarios.
• Integrate Keycloak (OIDC/OAuth2, JWT) and enforce role-/claim-based access.
• Implement messaging with RabbitMQ/MassTransit, including durable queues, retry, and DLQ strategies.
• Ship structured application logs to Graylog and support stream/index setups.
• Create background jobs with Hangfire; apply Dapper where high-throughput reads are required.
• Deliver notification integrations (MailJet and Firebase) with robust retry/error handling.
• Write solid unit tests with xUnit, Moq, AutoFixture, and FluentAssertions; prefer in-memory/SQLite for isolated tests.
• Containerize services with Docker; manage env vars, reverse proxy, CORS, and TLS settings.

Required Qualifications

• 5+ years of enterprise experience with ASP.NET Core Web API and .NET 7/8.
• Hands-on CQRS, MediatR, FluentValidation, and a Controller → Validator → Handler workflow.
• Strong MySQL skills (schema design, migrations, indexing, query optimization); comfortable using Dapper where appropriate.
• Experience with Refit for typed HTTP clients and JSON/REST integrations.
• Practical Keycloak integration (OIDC/OAuth2, JWT) and role-based authorization.
• RabbitMQ/MassTransit proficiency (exchanges/queues/routing, retries, DLQ, durability).
• Experience sending structured logs to Graylog and working with service-level streams/indexes.
• Testing discipline with xUnit, Moq, AutoFixture, FluentAssertions.
• Docker-based development and basic ops (env management, reverse proxy, CORS, TLS).

Nice to Have

• Production experience with Hangfire job scheduling.
• Experience with Strapi webhooks and lifecycle hooks to trigger business rules.
• Prior work on notification pipelines using MailJet and Firebase.

How We Work

• Modular architecture from API Host → Service → Data/Infrastructure → Integration.
• Standardized request validation, handler logic, data access, and consistent error/response models.
• Observability baked in: logging, exception middleware, traceability, and versioned APIs where needed.
• CI-friendly, containerized development practices.